Cosmetic contact lens for color blindness

Abstract

The invention is directed to a contact lens for color blindness, comprising: a pupil section, a generally annular iris section surrounding the pupil section, wherein the pupil section comprising a dye containing layer which is enclosed between two clear layers so that the dye cannot leach out, wherein the dye filters out the specific wavelength bands between 545 nm and 575 nm to correct color vision blindness; wherein the iris section having a colored, printed, opaque, intermittent pattern, said pattern comprising: an annular pattern of a color and at least at least one other colored patterns extending across a portion of the iris section selected from a group of patterns consisting of outermost starburst pattern, outer starburst pattern and inner starburst pattern

Description

[0001]The present invention generally relates to a cosmetic contact lens for color blindness with a cosmetic pattern around the optic zone to mask this appearance to create the appearance of blending in the corrective color with cosmetic iris pattern. The present invention also relates to a method for making cosmetic contact lens for color blindness.BACKGROUND OF THE INVENTION[0002]The prior art US499817 describes a soft corneal contact lens which improves the color discrimination of a color-blind person when applied to one eye only. Said lens comprising a clear, soft, corneal contact lens having on the central portion of its exterior surface a thin layer of red coloration characterized as being insoluble in water but soluble in aromatic hydrocarbon; light passing through the red layer having substantially all its transmissions above about 6000 Å; said red layer continuously covering substantially all the light normally admitted to the pupil of the eye during the daytime and being i...

AI Technical Summary

Benefits of technology

The invention provides a colored contact lens for color blindness that can correct color vision blindness by filtering out specific wavelength bands. The lens has a pupil section with an ink layer containing a dye enclosed between two clear layers. The ink layer has a substantially even outer perimeter and inner perimeter, and the dots of the pattern have a size and spacing that vary in a radial direction. The lens also has an annular colored pattern and other color patterns that blend in with the natural appearance of the eye. The method for making the lens involves applying layers of clear ink and ink containing dye to a lens mold, curing the ink layers, and dispensing a lens-forming material. The invention provides a solution for color blindness that improves the appearance of the eye and enhances color vision.

Problems solved by technology

In these instances, only the central portion of the eye has a solid cover over the pupil creating an aesthetically undesirable look.

The main disadvantage of the prior art is the appearance of the wearer.

The pupil region is not a natural color and appears undesirable to an observer: in addition, the red coloration may leach out to packaging solution when the contact lens is stored in the package before purchasing or to cleaning solution between wearing, or to tear when wearing.

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